<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>注册成功</title>
    <style>
    	h1 {text-align:center}
        div {text-align:center}
    </style>
</head>
<body>
<h1>恭喜你注册成功，您的用户名为: {{ username }}</h1>
<div>
    <h2><a href="/">返回主页</a></h2>
</div>
</body>
</html>